ive been working for a few days now with this server to make up mirc addons which uses /who +a <chan> then /whois nickname (with /who *G* (Gr is ignored)) then forcing it to read the numeric for the away message n ban it. its messy and complex,

But yes codemastr ur rite, this is how they are avioding the spamfilter
*sorry u dont like this idea but i cant see anyother way of stopping it*